Facebook says it will begin test flights later this year for a solar-powered drone with a wingspan as big as a Boeing 737, in the next stage of its campaign to deliver Internet connectivity to remote parts of the world.

The world’s largest online social network surpassed expectations on all fronts in the second quarter. It grew not just profit and revenue, but also its already-massive user base and mobile advertising, as well as usage of its “family” of non-Facebook apps like Instagram, Messenger and WhatsApp.